Non-Integer Order Generalized Filters Designs

doi:10.1109/ACCESS.2023.3325911

Non-Integer Order Generalized Filters Designs

2023-01-01

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DOI：10.1109/ACCESS.2023.3325911

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Abstract

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Non-integer order filters can be derived from a generalized structure presented in this work. More specifically, fractional-order and power-law filters of single- or double-order are special cases of non-integer order filters with three degrees of freedom and can be implemented using a Current Feedback Operational Amplifier as the active element. The transfer function is formed as a ratio of two impedances which can be synthesized using Foster or Cauer RC networks. A curve-fitting based technique is employed for approximating the magnitude and phase of each impedance. The behavior of the presented structures is evaluated through simulation results, using the OrCAD design suite and, also, through experimental results.

Keywords:

Band-pass filters

Low-pass filters

Transfer functions

Information filters

Impedance

Simulation

Operational amplifiers

Feedback

Analog filters

current feedback operational amplifiers

generalized filters

fractional-order filters

non-integer order filters

power-law filters

Non-Integer Order Generalized Filters Designs

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